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47 :
48 : #ifndef UnitVentilator_hh_INCLUDED
49 : #define UnitVentilator_hh_INCLUDED
50 :
51 : // ObjexxFCL Headers
52 : #include <ObjexxFCL/Array1D.hh>
53 : #include <ObjexxFCL/Optional.hh>
54 :
55 : // EnergyPlus Headers
56 : #include <EnergyPlus/Data/BaseData.hh>
57 : #include <EnergyPlus/DataGlobals.hh>
58 : #include <EnergyPlus/EPVector.hh>
59 : #include <EnergyPlus/EnergyPlus.hh>
60 : #include <EnergyPlus/Plant/Enums.hh>
61 : #include <EnergyPlus/Plant/PlantLocation.hh>
62 :
63 : namespace EnergyPlus {
64 :
65 : // Forward declarations
66 : struct EnergyPlusData;
67 :
68 : namespace UnitVentilator {
69 :
70 : enum class CoilsUsed
71 : {
72 : Invalid = -1,
73 : None,
74 : Both,
75 : Heating,
76 : Cooling,
77 : Num
78 : };
79 : enum class HeatCoilType
80 : {
81 : Invalid = -1,
82 : Electric,
83 : Gas,
84 : Water,
85 : Steam,
86 : Num
87 : };
88 : enum class CoolCoilType
89 : {
90 : Invalid = -1,
91 : Water,
92 : Detailed,
93 : HXAssisted,
94 : Num
95 : };
96 : enum class OAControl
97 : {
98 : Invalid = -1,
99 : VariablePercent,
100 : FixedTemperature,
101 : FixedAmount,
102 : Num
103 : };
104 :
105 25 : struct UnitVentilatorData
106 : {
107 : std::string Name; // name of unit
108 : int SchedPtr = 0; // index to schedule
109 : int AirInNode = 0; // inlet air node number
110 : int AirOutNode = 0; // outlet air node number
111 : int FanOutletNode = 0; // outlet node number for fan exit
112 : // (assumes fan is upstream of heating coil)
113 : int FanType_Num = 0; // Fan type number (see DataHVACGlobals)
114 : std::string FanName; // name of fan
115 : int Fan_Index = 0;
116 : int FanSchedPtr = 0; // index to fan operating mode schedule
117 : int FanAvailSchedPtr = 0; // index to fan availability schedule
118 : int OpMode = 0; // mode of operation; 1=cycling fan, cycling coil, 2=continuous fan, cycling coil
119 : int ControlCompTypeNum = 0;
120 : int CompErrIndex = 0;
121 : Real64 MaxAirVolFlow = 0.0; // m3/s
122 : Real64 MaxAirMassFlow = 0.0; // kg/s
123 : OAControl OAControlType = OAControl::Invalid; // type of control; options are VARIABLE PERCENT and FIXED TEMPERATURE
124 : int MinOASchedPtr = 0; // index to schedule
125 : int MaxOASchedPtr = 0; // index to schedule
126 : int TempSchedPtr = 0; // index to schedule
127 : int OutsideAirNode = 0; // outside air node number
128 : int AirReliefNode = 0; // relief air node number
129 : int OAMixerOutNode = 0; // outlet node after the outside air mixer (inlet to coils if present)
130 : Real64 OutAirVolFlow = 0.0; // m3/s
131 : Real64 OutAirMassFlow = 0.0; // kg/s
132 : Real64 MinOutAirVolFlow = 0.0; // m3/s
133 : Real64 MinOutAirMassFlow = 0.0; // kg/s
134 : CoilsUsed CoilOption = CoilsUsed::Invalid; // type of coil option; options are BOTH, HEATING, COOLING, AND NONE
135 : bool HCoilPresent = false; // .TRUE. if unit ventilator has a heating coil
136 : HeatCoilType HCoilType = HeatCoilType::Invalid; // type of heating coil (water, gas, electric, etc.)
137 : std::string HCoilName; // name of heating coil
138 : std::string HCoilTypeCh; // type of heating coil character string (same as type on idf file).
139 : int HCoil_Index = 0;
140 : DataPlant::PlantEquipmentType HeatingCoilType = DataPlant::PlantEquipmentType::Invalid;
141 : int HCoil_FluidIndex = 0;
142 : int HCoilSchedPtr = 0; // index to schedule
143 : Real64 HCoilSchedValue = 0.0;
144 : Real64 MaxVolHotWaterFlow = 0.0; // m3/s
145 : Real64 MaxVolHotSteamFlow = 0.0; // m3/s
146 : Real64 MaxHotWaterFlow = 0.0; // kg/s
147 : Real64 MaxHotSteamFlow = 0.0;
148 : Real64 MinHotSteamFlow = 0.0;
149 : Real64 MinVolHotWaterFlow = 0.0; // m3/s
150 : Real64 MinVolHotSteamFlow = 0.0; // m3/s
151 : Real64 MinHotWaterFlow = 0.0; // kg/s
152 : int HotControlNode = 0; // hot water control node
153 : int HotCoilOutNodeNum = 0; // outlet of coil
154 : Real64 HotControlOffset = 0.0; // control tolerance
155 : PlantLocation HWplantLoc; // index for plant location for hot water coil
156 : bool CCoilPresent = false; // .TRUE. if unit ventilator has a cooling coil
157 : std::string CCoilName; // name of cooling coil
158 : std::string CCoilTypeCh; // type of cooling coil as character string (same as on idf file)
159 : int CCoil_Index = 0;
160 : std::string CCoilPlantName; // name of cooling coil for plant
161 : std::string CCoilPlantType; // type of cooling coil for plant
162 : DataPlant::PlantEquipmentType CoolingCoilType = DataPlant::PlantEquipmentType::Invalid;
163 : CoolCoilType CCoilType = CoolCoilType::Invalid;
164 : int CCoilSchedPtr = 0; // index to schedule
165 : Real64 CCoilSchedValue = 0.0;
166 : Real64 MaxVolColdWaterFlow = 0.0; // m3/s
167 : Real64 MaxColdWaterFlow = 0.0; // kg/s
168 : Real64 MinVolColdWaterFlow = 0.0; // m3/s
169 : Real64 MinColdWaterFlow = 0.0; // kg/s
170 : int ColdControlNode = 0; // chilled water control node
171 : int ColdCoilOutNodeNum = 0; // chilled water coil out node
172 : Real64 ColdControlOffset = 0.0; // control tolerance
173 : PlantLocation CWPlantLoc; // index for plant component for chilled water coil
174 : // Report data
175 : Real64 HeatPower = 0.0; // unit heating output in watts
176 : Real64 HeatEnergy = 0.0; // unit heating output in J
177 : Real64 TotCoolPower = 0.0;
178 : Real64 TotCoolEnergy = 0.0;
179 : Real64 SensCoolPower = 0.0;
180 : Real64 SensCoolEnergy = 0.0;
181 : Real64 ElecPower = 0.0;
182 : Real64 ElecEnergy = 0.0;
183 : std::string AvailManagerListName; // Name of an availability manager list object
184 : int AvailStatus = 0;
185 : Real64 FanPartLoadRatio = 0.0; // fan part-load ratio for time step
186 : Real64 PartLoadFrac = 0.0; // unit ventilator part-load ratio for time step
187 : int ZonePtr = 0; // pointer to a zone served by a unit ventilator
188 : int HVACSizingIndex = 0; // index of a HVACSizing object for a unit ventilator
189 : bool ATMixerExists = false; // True if there is an ATMixer
190 : std::string ATMixerName; // name of air mixer
191 : int ATMixerIndex = 0; // index to the air mixer
192 : int ATMixerType = 0; // 1 = inlet side mixer, 2 = supply side mixer
193 : int ATMixerPriNode = 0; // primary inlet air node number for the mixer
194 : int ATMixerSecNode = 0; // secondary air inlet node number for the mixer
195 : int ATMixerOutNode = 0; // outlet air node number for the mixer
196 : bool FirstPass = true; // detects first time through for resetting sizing data
197 :
198 25 : UnitVentilatorData() = default;
199 30 : ~UnitVentilatorData()
200 30 : {
201 30 : }
202 : };
203 :
204 25 : struct UnitVentNumericFieldData
205 : {
206 : // Members
207 : Array1D_string FieldNames;
208 :
209 25 : UnitVentNumericFieldData() = default;
210 30 : ~UnitVentNumericFieldData()
211 30 : {
212 30 : }
213 : };
214 :
215 : void SimUnitVentilator(EnergyPlusData &state,
216 : std::string_view CompName, // name of the fan coil unit
217 : int const ZoneNum, // number of zone being served
218 : bool const FirstHVACIteration, // TRUE if 1st HVAC simulation of system timestep
219 : Real64 &PowerMet, // Sensible power supplied (W)
220 : Real64 &LatOutputProvided, // Latent add/removal supplied by window AC (kg/s), dehumid = negative
221 : int &CompIndex);
222 :
223 : void GetUnitVentilatorInput(EnergyPlusData &state);
224 :
225 : void InitUnitVentilator(EnergyPlusData &state,
226 : int const UnitVentNum, // index for the current unit ventilator
227 : bool const FirstHVACIteration, // TRUE if 1st HVAC simulation of system timestep
228 : int const ZoneNum // number of zone being served
229 : );
230 :
231 : void SizeUnitVentilator(EnergyPlusData &state, int const UnitVentNum);
232 :
233 : void CalcUnitVentilator(EnergyPlusData &state,
234 : int &UnitVentNum, // number of the current fan coil unit being simulated
235 : int const ZoneNum, // number of zone being served
236 : bool const FirstHVACIteration, // TRUE if 1st HVAC simulation of system timestep
237 : Real64 &PowerMet, // Sensible power supplied (W)
238 : Real64 &LatOutputProvided // Latent power supplied (kg/s), negative = dehumidification
239 : );
240 :
241 : void CalcUnitVentilatorComponents(EnergyPlusData &state,
242 : int const UnitVentNum, // Unit index in unit ventilator array
243 : bool const FirstHVACIteration, // flag for 1st HVAV iteration in the time step
244 : Real64 &LoadMet, // load met by unit (watts)
245 : Optional_int_const OpMode = DataHVACGlobals::ContFanCycCoil, // Fan Type
246 : Optional<Real64 const> PartLoadFrac = 1.0 // Part Load Ratio of coil and fan
247 : );
248 :
249 : void SimUnitVentOAMixer(EnergyPlusData &state,
250 : int const UnitVentNum, // Unit index in unit ventilator array
251 : int const FanOpMode // unit ventilator fan operating mode
252 : );
253 :
254 : void ReportUnitVentilator(EnergyPlusData &state, int const UnitVentNum); // Unit index in unit ventilator array
255 :
256 : int GetUnitVentilatorOutAirNode(EnergyPlusData &state, int const UnitVentNum);
257 :
258 : int GetUnitVentilatorZoneInletAirNode(EnergyPlusData &state, int const UnitVentNum);
259 :
260 : int GetUnitVentilatorMixedAirNode(EnergyPlusData &state, int const UnitVentNum);
261 :
262 : int GetUnitVentilatorReturnAirNode(EnergyPlusData &state, int const UnitVentNum);
263 :
264 : Real64 SetOAMassFlowRateForCoolingVariablePercent(EnergyPlusData &state,
265 : int const UnitVentNum, // Unit Ventilator index number
266 : Real64 const MinOAFrac, // Minimum Outside Air Fraction
267 : Real64 const MassFlowRate, // Design Outside Air Mass Flow Rate
268 : Real64 const MaxOAFrac, // Maximum Outside Air Fraction
269 : Real64 const Tinlet, // Inlet Temperature to Unit or Zone Temperature
270 : Real64 const Toutdoor // Outdoor Air Temperature
271 : );
272 :
273 : void CalcMdotCCoilCycFan(EnergyPlusData &state,
274 : Real64 &mdot, // mass flow rate
275 : Real64 &QCoilReq, // Remaining cooling coil load
276 : Real64 const QZnReq, // Zone load to setpoint
277 : int const UnitVentNum, // Unit Ventilator index
278 : Real64 const PartLoadRatio // Part load ratio for unit ventilator
279 : );
280 :
281 : } // namespace UnitVentilator
282 :
283 : struct UnitVentilatorsData : BaseGlobalStruct
284 : {
285 :
286 : // Current Module Unit type
287 : std::string const cMO_UnitVentilator = "ZoneHVAC:UnitVentilator";
288 :
289 : bool HCoilOn = false; // TRUE if the heating coil = gas or electric especially) should be running
290 : int NumOfUnitVents = 0; // Number of unit ventilators in the input file
291 : Real64 OAMassFlowRate = 0.0; // Outside air mass flow rate for the unit ventilator
292 : Real64 QZnReq = 0.0; // heating or cooling needed by zone [watts]
293 : Array1D_bool MySizeFlag;
294 : bool GetUnitVentilatorInputFlag = true; // First time, input is "gotten"
295 : Array1D_bool CheckEquipName;
296 :
297 : EPVector<UnitVentilator::UnitVentilatorData> UnitVent;
298 : EPVector<UnitVentilator::UnitVentNumericFieldData> UnitVentNumericFields;
299 :
300 : bool MyOneTimeFlag = true;
301 : bool ZoneEquipmentListChecked = false; // True after the Zone Equipment List has been checked for items
302 :
303 : Array1D_bool MyEnvrnFlag;
304 : Array1D_bool MyPlantScanFlag;
305 : Array1D_bool MyZoneEqFlag;
306 :
307 : int RefrigIndex = 0;
308 : int DummyWaterIndex = 1;
309 :
310 : int ATMixOutNode = 0; // outlet node of ATM Mixer
311 : int ATMixerPriNode = 0; // primary air node of ATM Mixer
312 : int ZoneNode = 0; // zone node
313 :
314 0 : void clear_state() override
315 : {
316 0 : this->HCoilOn = false;
317 0 : this->NumOfUnitVents = 0;
318 0 : this->OAMassFlowRate = 0.0;
319 0 : this->QZnReq = 0.0;
320 0 : this->GetUnitVentilatorInputFlag = true;
321 0 : this->MySizeFlag.deallocate();
322 0 : this->CheckEquipName.deallocate();
323 0 : this->UnitVent.deallocate();
324 0 : this->UnitVentNumericFields.deallocate();
325 0 : this->MyOneTimeFlag = true;
326 0 : this->ZoneEquipmentListChecked = false;
327 0 : this->MyEnvrnFlag.deallocate();
328 0 : this->MyPlantScanFlag.deallocate();
329 0 : this->MyZoneEqFlag.deallocate();
330 0 : this->RefrigIndex = 0;
331 0 : this->DummyWaterIndex = 1;
332 0 : this->ATMixOutNode = 0;
333 0 : this->ATMixerPriNode = 0;
334 0 : this->ZoneNode = 0;
335 0 : }
336 :
337 : // Default Constructor
338 771 : UnitVentilatorsData() = default;
339 771 : ~UnitVentilatorsData()
340 771 : {
341 771 : }
342 : };
343 : } // namespace EnergyPlus
344 :
345 : #endif
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